(19)

(11)

EP 1 451 723 A2

(12)

(88) Date of publication A3: 17.06.2004 (43) Date of publication: 01.09.2004 Bulletin 2004/36 (21) Application number: 02781471.4 (22) Date of filing: 31.10.2002

(51) International Patent Classification (IPC)7: G06F 17/30 (86) International application number: PCT/IB2002/004605 (87) International publication number: WO 2003/046760 (05.06.2003 Gazette 2003/23)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 29.11.2001 EP 01204599 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventors: KALKER, Antonius, A., C., M. NL-5656 AA Eindhoven (NL) HAITSMA, Jaap, A. NL-5656 AA Eindhoven (NL) (74) Representative: Groenendaal, Antonius Wilhelmus Maria et al PhilipsIntellectual Property & StandardsP.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)